* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #fff;
    color: #000;
    min-height: 100vh;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid #333;
    margin-bottom: 20px;
}

header .logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 15px;
}

header h1 {
    font-size: 24px;
    font-weight: 600;
}

/* Screens */
.screen {
    display: none;
}

.screen.active {
    display: block;
}

h2 {
    font-size: 20px;
    margin-bottom: 10px;
}

.subtitle {
    color: #888;
    font-size: 14px;
    margin-bottom: 20px;
}

/* Back Button */
.back-btn {
    background: none;
    border: none;
    color: #007AFF;
    font-size: 16px;
    cursor: pointer;
    margin-bottom: 20px;
    padding: 5px 0;
}

.back-btn:hover {
    opacity: 0.8;
}

/* Type Selection Buttons */
.type-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.type-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #1c1c1e;
    border: none;
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    text-align: left;
    transition: background 0.2s;
}

.type-btn:hover {
    background: #2c2c2e;
}

.type-btn .icon {
    font-size: 28px;
    width: 40px;
    text-align: center;
}

.type-btn .label {
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    display: block;
}

.type-btn .desc {
    font-size: 13px;
    color: #888;
    display: block;
    margin-top: 2px;
}

/* Option Buttons */
.option-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-btn {
    display: block;
    background: #1c1c1e;
    border: none;
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    text-align: left;
    transition: background 0.2s;
}

.option-btn:hover {
    background: #2c2c2e;
}

.option-btn .label {
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    display: block;
}

.option-btn .desc {
    font-size: 13px;
    color: #888;
    display: block;
    margin-top: 4px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.tab {
    background: #1c1c1e;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    color: #888;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.tab.active {
    background: #007AFF;
    color: #fff;
}

.tab:hover:not(.active) {
    background: #2c2c2e;
}

.tab.add-tab {
    background: #2c2c2e;
    font-size: 18px;
    padding: 10px 14px;
}

/* Input Form */
.input-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #1c1c1e;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-group label {
    font-size: 15px;
    color: #fff;
}

.input-group input,
.input-group select {
    background: #2c2c2e;
    border: none;
    border-radius: 8px;
    padding: 10px 12px;
    color: #fff;
    font-size: 15px;
    width: 120px;
    text-align: right;
}

.input-group input:focus,
.input-group select:focus {
    outline: 2px solid #007AFF;
}

.input-group select {
    text-align: left;
    width: 140px;
}

/* Summary */
.summary {
    background: #1c1c1e;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
}

.summary-item:not(:last-child) {
    border-bottom: 1px solid #333;
}

.summary-item span:first-child {
    color: #888;
}

.summary-item span:last-child {
    font-weight: 600;
    color: #fff;
}

/* Buttons */
.calculate-btn {
    width: 100%;
    background: #007AFF;
    border: none;
    border-radius: 12px;
    padding: 16px;
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.calculate-btn:hover {
    opacity: 0.9;
}

/* Results Screen */
.coat-description {
    color: #888;
    font-size: 14px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.price-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.price-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #1c1c1e;
    border: 2px solid transparent;
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.price-option:hover {
    background: #2c2c2e;
}

.price-option.selected {
    border-color: #007AFF;
    background: #0a1a2e;
}

.price-option .name {
    font-size: 16px;
    font-weight: 600;
}

.price-option .price {
    font-size: 18px;
    font-weight: 700;
    color: #30D158;
}

/* Custom Price */
.custom-price {
    background: #1c1c1e;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.custom-price label {
    font-size: 15px;
}

.custom-price input {
    background: #2c2c2e;
    border: none;
    border-radius: 8px;
    padding: 10px 12px;
    color: #fff;
    font-size: 15px;
    width: 140px;
    text-align: right;
}

.custom-price input:focus {
    outline: 2px solid #007AFF;
}

/* Results Summary */
.results-summary {
    background: #1c1c1e;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.price-value {
    color: #30D158 !important;
    font-size: 20px !important;
}

/* Responsive */
@media (max-width: 400px) {
    .container {
        padding: 15px;
    }

    .input-group input,
    .input-group select {
        width: 100px;
    }
}